/////////////////////////////////////////////////////////////////////////////
// ==========================================================================
-// declarations
+// headers, declarations, constants
// ==========================================================================
-// --------------------------------------------------------------------------
-// headers
-// --------------------------------------------------------------------------
-
-#ifdef __GNUG__
- #pragma implementation "game.h"
-#endif
-
-// for compilers that support precompilation, includes "wx/wx.h"
+// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
- #pragma hdrstop
+#pragma hdrstop
#endif
-// for all others, include the necessary headers
#ifndef WX_PRECOMP
- #include "wx/wx.h"
+#include "wx/wx.h"
#endif
+#include "wx/log.h"
+#include "wx/module.h"
#include "game.h"
+#include <string.h> // for memset
+
+
+#define CELLSARRAYSIZE 1024 // static array for BeginFind & co.
+#define ALLOCBOXES 16 // number of cellboxes to alloc at once
+#define MAXDEAD 8 // tics before removing cellbox from list
+
+
// ==========================================================================
-// implementation
+// CellBox
// ==========================================================================
-// --------------------------------------------------------------------------
+#define HASH(x, y) (((x >> 3) & 0x7f) << 7) + ((y >> 3) & 0x7f)
+
+#define HASHSIZE 16384 // hash table size (do not change!)
+#define CELLBOX 8 // cells in a cellbox (do not change!)
+
+
+class LifeCellBox
+{
+public:
+ // members
+ inline bool IsAlive(int dx, int dy) const;
+ inline bool SetCell(int dx, int dy, bool alive);
+
+ // attributes
+ wxInt32 m_x, m_y; // position in universe
+ wxUint32 m_live1, m_live2; // alive cells (1 bit per cell)
+ wxUint32 m_old1, m_old2; // old values for m_live1, 2
+ wxUint32 m_on[8]; // neighbouring info
+ wxUint32 m_dead; // been dead for n generations
+ LifeCellBox *m_up, *m_dn, *m_lf, *m_rt; // neighbour CellBoxes
+ LifeCellBox *m_prev, *m_next; // in linked list
+ LifeCellBox *m_hprev, *m_hnext; // in hash table
+};
+
+
+// IsAlive:
+// Returns whether cell dx, dy in this box is alive
+//
+bool LifeCellBox::IsAlive(int dx, int dy) const
+{
+ if (dy > 3)
+ return (m_live2 & 1 << ((dy - 4) * 8 + dx)) ? true : false ;
+ else
+ return (m_live1 & 1 << ((dy) * 8 + dx)) ? true : false ;
+}
+
+// SetCell:
+// Sets cell dx, dy in this box to 'alive', returns true if
+// the previous value was different, false if it was the same.
+//
+bool LifeCellBox::SetCell(int dx, int dy, bool alive)
+{
+ if (IsAlive(dx, dy) != alive)
+ {
+ if (dy > 3)
+ m_live2 ^= 1 << ((dy - 4) * 8 + dx);
+ else
+ m_live1 ^= 1 << ((dy) * 8 + dx);
+
+ // reset this here to avoid updating problems
+ m_dead = 0;
+
+ return true;
+ }
+ else
+ return false;
+}
+
+
+// ==========================================================================
// Life
+// ==========================================================================
+
// --------------------------------------------------------------------------
+// Ctor and dtor
+// --------------------------------------------------------------------------
+
+Life::Life()
+{
+ // pattern description
+ m_name = wxEmptyString;
+ m_rules = wxEmptyString;
+ m_description = wxEmptyString;
+
+ // pattern data
+ m_numcells = 0;
+ m_boxes = new LifeCellBox *[HASHSIZE];
+ m_head = NULL;
+ m_available = NULL;
+ for (int i = 0; i < HASHSIZE; i++)
+ m_boxes[i] = NULL;
-/* Format of the cell: (32 bit integer)
- *
- * 0yyyyyyy yyyyyy0x xxxxxxxxx xxx000ff
- *
- * y = y coordinate (13 bits)
- * x = x coordinate (13 bits)
- * f = flags (2 bits)
- *
- * OK, there is a reason for this, I promise :-). But I won't explain
- * it now; it will be more clear when I implement the optimized life
- * algorithm for large universes.
- */
-
-Life::Life(int width, int height)
-{
- m_wrap = TRUE;
- Create(width, height);
+ // state vars for BeginFind & FindMore
+ m_cells = new LifeCell[CELLSARRAYSIZE];
+ m_ncells = 0;
+ m_findmore = false;
+ m_changed = false;
}
Life::~Life()
{
- Destroy();
+ Clear();
+
+ delete[] m_boxes;
+ delete[] m_cells;
}
-void Life::Create(int width, int height)
+// Clear:
+// Clears the board, freeing all storage.
+//
+void Life::Clear()
{
- wxASSERT(width > 0 && height > 0 && m_cells.IsEmpty());
+ LifeCellBox *c, *nc;
- m_width = width;
- m_height = height;
+ // clear the hash table pointers
+ for (int i = 0; i < HASHSIZE; i++)
+ m_boxes[i] = NULL;
- // preallocate memory to speed up initialization
- m_cells.Alloc(m_width * m_height);
- m_changed.Alloc(1000);
+ // free used boxes
+ c = m_head;
+ while (c)
+ {
+ nc = c->m_next;
+ delete c;
+ c = nc;
+ }
+ m_head = NULL;
+
+ // free available boxes
+ c = m_available;
+ while (c)
+ {
+ nc = c->m_next;
+ delete c;
+ c = nc;
+ }
+ m_available = NULL;
- // add all cells
- for (int j = 0; j < m_height; j++)
- for (int i = 0; i < m_width; i++)
- m_cells.Add( MakeCell(i, j, FALSE) );
+ // reset state
+ m_name = wxEmptyString;
+ m_rules = wxEmptyString;
+ m_description = wxEmptyString;
+ m_numcells = 0;
}
-void Life::Destroy()
+// --------------------------------------------------------------------------
+// Test and set individual cells
+// --------------------------------------------------------------------------
+
+// IsAlive:
+// Returns whether cell (x, y) is alive.
+//
+bool Life::IsAlive(wxInt32 x, wxInt32 y)
{
- m_cells.Clear();
- m_changed.Clear();
+ LifeCellBox *c = LinkBox(x, y, false);
+
+ return (c && c->IsAlive( x - c->m_x, y - c->m_y ));
}
-void Life::Clear()
+// SetCell:
+// Sets or clears cell (x, y), according to the 'alive' param.
+//
+void Life::SetCell(wxInt32 x, wxInt32 y, bool alive)
{
- // set all cells in the array to dead
- for (int j = 0; j < m_height; j++)
- for (int i = 0; i < m_width; i++)
- m_cells[j * m_width + i] &= ~CELL_ALIVE;
+ LifeCellBox *c = LinkBox(x, y);
+ wxUint32 dx = x - c->m_x;
+ wxUint32 dy = y - c->m_y;
+
+ if (c->SetCell(dx, dy, alive))
+ {
+ if (alive)
+ m_numcells++;
+ else
+ m_numcells--;
+ }
}
-Cell Life::MakeCell(int i, int j, bool alive) const
+void Life::SetPattern(const LifePattern& pattern)
{
- return (Cell)((j << 18) | (i << 5) | (alive? CELL_ALIVE : CELL_DEAD));
+ wxArrayString data = pattern.m_shape;
+ wxString line;
+ long x = 0,
+ y = 0;
+
+ Clear();
+ for (size_t n = 0; n < data.GetCount(); n++)
+ {
+ line = data[n];
+
+ if ( (line.GetChar(0) != wxT('*')) &&
+ (line.GetChar(0) != wxT('.')) )
+ {
+ // assume that it is a digit or a minus sign
+ line.BeforeFirst(wxT(' ')).ToLong(&x);
+ line.AfterFirst(wxT(' ')).ToLong(&y);
+ }
+ else
+ {
+ // pattern data
+ for (size_t k = 0; k < line.Len(); k++)
+ SetCell(x + k, y, line.GetChar(k) == wxT('*'));
+
+ y++;
+ }
+ }
+
+ m_name = pattern.m_name;
+ m_rules = pattern.m_rules;
+ m_description = pattern.m_description;
}
-bool Life::IsAlive(int i, int j) const
+// --------------------------------------------------------------------------
+// Cellbox management functions
+// --------------------------------------------------------------------------
+
+// CreateBox:
+// Creates a box in x, y, either taking it from the list
+// of available boxes, or allocating a new one.
+//
+LifeCellBox* Life::CreateBox(wxInt32 x, wxInt32 y, wxUint32 hv)
{
- wxASSERT(i >= 0 && j >= 0 && i < m_width && j < m_height);
+ LifeCellBox *c;
+
+ // if there are no available boxes, alloc a few more
+ if (!m_available)
+ for (int i = 1; i <= ALLOCBOXES; i++)
+ {
+ c = new LifeCellBox();
+
+ if (!c)
+ {
+ // TODO: handle memory errors. Note that right now, if we
+ // couldn't allocate at least one cellbox, we will crash
+ // before leaving CreateBox(). Probably we should try to
+ // allocate some boxes *before* the m_available list goes
+ // empty, so that we have a margin to handle errors
+ // gracefully.
+ wxLogFatalError(_("Out of memory! Aborting..."));
+
+ // NOTREACHED
+ }
+
+ c->m_next = m_available;
+ m_available = c;
+ }
+
+ // take a cellbox from the list of available boxes
+ c = m_available;
+ m_available = c->m_next;
+
+ // reset everything
+ memset((void *) c, 0, sizeof(LifeCellBox));
+ c->m_x = x;
+ c->m_y = y;
+
+ // insert c in the list
+ c->m_next = m_head;
+ m_head = c;
+ if (c->m_next) c->m_next->m_prev = c;
+
+ // insert c in the hash table
+ c->m_hnext = m_boxes[hv];
+ m_boxes[hv] = c;
+ if (c->m_hnext) c->m_hnext->m_hprev = c;
- return (m_cells[j * m_width + i] & CELL_ALIVE);
+ return c;
}
-bool Life::IsAlive(Cell c) const { return (c & CELL_ALIVE); };
-int Life::GetX(Cell c) const { return (c >> 5) & 0x1fff; };
-int Life::GetY(Cell c) const { return (c >> 18); };
+// LinkBox:
+// Returns a pointer to the box (x, y); if it didn't exist yet,
+// it returns NULL or creates a new one, depending on the value
+// of the 'create' parameter.
+//
+LifeCellBox* Life::LinkBox(wxInt32 x, wxInt32 y, bool create)
+{
+ wxUint32 hv;
+ LifeCellBox *c;
+
+ x &= 0xfffffff8;
+ y &= 0xfffffff8;
+ hv = HASH(x, y);
-Cell Life::SetCell(int i, int j, bool alive)
+ // search in the hash table
+ for (c = m_boxes[hv]; c; c = c->m_hnext)
+ if ((c->m_x == x) && (c->m_y == y)) return c;
+
+ // if not found, and (create == true), create a new one
+ return create? CreateBox(x, y, hv) : (LifeCellBox*) NULL;
+}
+
+// KillBox:
+// Removes this box from the list and the hash table and
+// puts it in the list of available boxes.
+//
+void Life::KillBox(LifeCellBox *c)
{
- wxASSERT(i >= 0 && j >= 0 && i < m_width && j < m_height);
+ wxUint32 hv = HASH(c->m_x, c->m_y);
- Cell c = MakeCell(i, j, alive);
+ // remove from the list
+ if (c != m_head)
+ c->m_prev->m_next = c->m_next;
+ else
+ m_head = c->m_next;
- m_cells[j * m_width + i] = c;
- return c;
+ // remove from the hash table
+ if (c != m_boxes[hv])
+ c->m_hprev->m_hnext = c->m_hnext;
+ else
+ m_boxes[hv] = c->m_hnext;
+
+ // update neighbours
+ if (c->m_next) c->m_next->m_prev = c->m_prev;
+ if (c->m_hnext) c->m_hnext->m_hprev = c->m_hprev;
+ if (c->m_up) c->m_up->m_dn = NULL;
+ if (c->m_dn) c->m_dn->m_up = NULL;
+ if (c->m_lf) c->m_lf->m_rt = NULL;
+ if (c->m_rt) c->m_rt->m_lf = NULL;
+
+ // append to the list of available boxes
+ c->m_next = m_available;
+ m_available = c;
}
-void Life::SetShape(LifeShape& shape)
+// --------------------------------------------------------------------------
+// Navigation
+// --------------------------------------------------------------------------
+
+LifeCell Life::FindCenter()
{
- wxASSERT((m_width >= shape.m_width) && (m_height >= shape.m_height));
+ double sx, sy;
+ int n;
+ sx = 0.0;
+ sy = 0.0;
+ n = 0;
- int i0 = (m_width - shape.m_width) / 2;
- int j0 = (m_height - shape.m_height) / 2;
- char *p = shape.m_data;
+ LifeCellBox *c;
+ for (c = m_head; c; c = c->m_next)
+ if (!c->m_dead)
+ {
+ sx += c->m_x;
+ sy += c->m_y;
+ n++;
+ }
- Clear();
- for (int j = j0; j < j0 + shape.m_height; j++)
- for (int i = i0; i < i0 + shape.m_width; i++)
- SetCell(i, j, *(p++) == '*');
+ if (n > 0)
+ {
+ sx = (sx / n) + CELLBOX / 2;
+ sy = (sy / n) + CELLBOX / 2;
+ }
+
+ LifeCell cell;
+ cell.i = (wxInt32) sx;
+ cell.j = (wxInt32) sy;
+ return cell;
}
-bool Life::NextTic()
+LifeCell Life::FindNorth()
{
- int i, j;
+ wxInt32 x = 0, y = 0;
+ bool first = true;
+
+ LifeCellBox *c;
+ for (c = m_head; c; c = c->m_next)
+ if (!c->m_dead && ((first) || (c->m_y < y)))
+ {
+ x = c->m_x;
+ y = c->m_y;
+ first = false;
+ }
+
+ LifeCell cell;
+ cell.i = first? 0 : x + CELLBOX / 2;
+ cell.j = first? 0 : y + CELLBOX / 2;
+ return cell;
+}
- m_changed.Empty();
+LifeCell Life::FindSouth()
+{
+ wxInt32 x = 0, y = 0;
+ bool first = true;
- /* 1st pass. Find and mark deaths and births for this generation.
- *
- * Rules:
- * An organism with <= 1 neighbors will die due to isolation.
- * An organism with >= 4 neighbors will die due to starvation.
- * New organisms are born in cells with exactly 3 neighbors.
- */
- for (j = 0; j < m_height; j++)
- for (i = 0; i < m_width; i++)
+ LifeCellBox *c;
+ for (c = m_head; c; c = c->m_next)
+ if (!c->m_dead && ((first) || (c->m_y > y)))
{
- int neighbors = GetNeighbors(i, j);
- bool alive = IsAlive(i, j);
+ x = c->m_x;
+ y = c->m_y;
+ first = false;
+ }
- /* Set CELL_MARK if this cell must change, clear it
- * otherwise. We cannot toggle the CELL_ALIVE bit yet
- * because all deaths and births are simultaneous (it
- * would affect neighbouring cells).
- */
- if ((!alive && neighbors == 3) ||
- (alive && (neighbors <= 1 || neighbors >= 4)))
- {
- m_cells[j * m_width + i] |= CELL_MARK;
- m_changed.Add( MakeCell(i, j, !alive) );
- }
- else
- m_cells[j * m_width + i] &= ~CELL_MARK;
+ LifeCell cell;
+ cell.i = first? 0 : x + CELLBOX / 2;
+ cell.j = first? 0 : y + CELLBOX / 2;
+ return cell;
+}
+
+LifeCell Life::FindWest()
+{
+ wxInt32 x = 0, y = 0;
+ bool first = true;
+
+ LifeCellBox *c;
+ for (c = m_head; c; c = c->m_next)
+ if (!c->m_dead && ((first) || (c->m_x < x)))
+ {
+ x = c->m_x;
+ y = c->m_y;
+ first = false;
}
- /* 2nd pass. Stabilize.
- */
- for (j = 0; j < m_height; j++)
- for (i = 0; i < m_width; i++)
+ LifeCell cell;
+ cell.i = first? 0 : x + CELLBOX / 2;
+ cell.j = first? 0 : y + CELLBOX / 2;
+ return cell;
+}
+
+LifeCell Life::FindEast()
+{
+ wxInt32 x = 0, y = 0;
+ bool first = true;
+
+ LifeCellBox *c;
+ for (c = m_head; c; c = c->m_next)
+ if (!c->m_dead && ((first) || (c->m_x > x)))
{
- /* Toggle CELL_ALIVE for those cells marked in the
- * previous pass. Do not clear the CELL_MARK bit yet;
- * it is useful to know which cells have changed and
- * thus must be updated in the screen.
- */
- if (m_cells[j * m_width + i] & CELL_MARK)
- m_cells[j * m_width + i] ^= CELL_ALIVE;
+ x = c->m_x;
+ y = c->m_y;
+ first = false;
}
- return (!m_changed.IsEmpty());
+ LifeCell cell;
+ cell.i = first? 0 : x + CELLBOX / 2;
+ cell.j = first? 0 : y + CELLBOX / 2;
+ return cell;
}
-int Life::GetNeighbors(int x, int y) const
+// --------------------------------------------------------------------------
+// FindMore & co.
+// --------------------------------------------------------------------------
+
+// DoLine:
+// Post eight cells to the cell arrays - leave out the fourth
+// argument (or pass 0, the default value) to post alive cells
+// only, else it will post cells which have changed.
+//
+void Life::DoLine(wxInt32 x, wxInt32 y, wxUint32 live, wxUint32 old)
{
- wxASSERT(x >= 0 && y >= 0 && x < m_width && y < m_height);
+ wxUint32 diff = (live ^ old) & 0xff;
- int neighbors = 0;
+ if (!diff) return;
- int i0 = (x)? (x - 1) : 0;
- int j0 = (y)? (y - 1) : 0;
- int i1 = (x < (m_width - 1))? (x + 1) : (m_width - 1);
- int j1 = (y < (m_height - 1))? (y + 1) : (m_height - 1);
+ for (wxInt32 k = 8; k; k--, x++)
+ {
+ if (diff & 0x01)
+ {
+ m_cells[m_ncells].i = x;
+ m_cells[m_ncells].j = y;
+ m_ncells++;
+ }
+ diff >>= 1;
+ }
+}
+
+void Life::BeginFind(wxInt32 x0, wxInt32 y0, wxInt32 x1, wxInt32 y1, bool changed)
+{
+ // TODO: optimize for the case where the maximum number of
+ // cellboxes that fit in the specified viewport is smaller
+ // than the current total of boxes; iterating over the list
+ // should then be faster than searching in the hash table.
- if (m_wrap && ( !x || !y || x == (m_width - 1) || y == (m_height - 1)))
+ m_x0 = m_x = x0 & 0xfffffff8;
+ m_y0 = m_y = y0 & 0xfffffff8;
+ m_x1 = (x1 + 7) & 0xfffffff8;
+ m_y1 = (y1 + 7) & 0xfffffff8;
+
+ m_findmore = true;
+ m_changed = changed;
+}
+
+bool Life::FindMore(LifeCell *cells[], size_t *ncells)
+{
+ LifeCellBox *c;
+ *cells = m_cells;
+ m_ncells = 0;
+
+ if (m_changed)
{
- // this is an outer cell and wraparound is on
- for (int j = y - 1; j <= y + 1; j++)
- for (int i = x - 1; i <= x + 1; i++)
- if (IsAlive( ((i < 0)? (i + m_width ) : (i % m_width)),
- ((j < 0)? (j + m_height) : (j % m_height)) ))
- neighbors++;
+ for ( ; m_y <= m_y1; m_y += 8, m_x = m_x0)
+ for ( ; m_x <= m_x1; m_x += 8)
+ {
+ if ((c = LinkBox(m_x, m_y, false)) == NULL)
+ continue;
+
+ // check whether there is enough space left in the array
+ if (m_ncells > (CELLSARRAYSIZE - 64))
+ {
+ *ncells = m_ncells;
+ return false;
+ }
+
+ DoLine(m_x, m_y , c->m_live1, c->m_old1 );
+ DoLine(m_x, m_y + 1, c->m_live1 >> 8, c->m_old1 >> 8 );
+ DoLine(m_x, m_y + 2, c->m_live1 >> 16, c->m_old1 >> 16);
+ DoLine(m_x, m_y + 3, c->m_live1 >> 24, c->m_old1 >> 24);
+ DoLine(m_x, m_y + 4, c->m_live2, c->m_old2 );
+ DoLine(m_x, m_y + 5, c->m_live2 >> 8, c->m_old2 >> 8 );
+ DoLine(m_x, m_y + 6, c->m_live2 >> 16, c->m_old2 >> 16);
+ DoLine(m_x, m_y + 7, c->m_live2 >> 24, c->m_old2 >> 24);
+ }
}
else
{
- // this is an inner cell, or wraparound is off
- for (int j = j0; j <= j1; j++)
- for (int i = i0; i <= i1; i++)
- if (IsAlive(i, j))
- neighbors++;
+ for ( ; m_y <= m_y1; m_y += 8, m_x = m_x0)
+ for ( ; m_x <= m_x1; m_x += 8)
+ {
+ if ((c = LinkBox(m_x, m_y, false)) == NULL)
+ continue;
+
+ // check whether there is enough space left in the array
+ if (m_ncells > (CELLSARRAYSIZE - 64))
+ {
+ *ncells = m_ncells;
+ return false;
+ }
+
+ DoLine(m_x, m_y , c->m_live1 );
+ DoLine(m_x, m_y + 1, c->m_live1 >> 8 );
+ DoLine(m_x, m_y + 2, c->m_live1 >> 16);
+ DoLine(m_x, m_y + 3, c->m_live1 >> 24);
+ DoLine(m_x, m_y + 4, c->m_live2 );
+ DoLine(m_x, m_y + 5, c->m_live2 >> 8 );
+ DoLine(m_x, m_y + 6, c->m_live2 >> 16);
+ DoLine(m_x, m_y + 7, c->m_live2 >> 24);
+ }
+ }
+
+ *ncells = m_ncells;
+ m_findmore = false;
+ return true;
+}
+
+// --------------------------------------------------------------------------
+// Evolution engine
+// --------------------------------------------------------------------------
+
+extern unsigned char *g_tab;
+extern int g_tab1[];
+extern int g_tab2[];
+
+// NextTic:
+// Advance one step in evolution :-)
+//
+bool Life::NextTic()
+{
+ LifeCellBox *c, *up, *dn, *lf, *rt;
+ wxUint32 t1, t2, t3, t4;
+ bool changed = false;
+
+ m_numcells = 0;
+
+ // Stage 1:
+ // Compute neighbours of each cell
+ //
+ // WARNING: unrolled loops and lengthy code follows!
+ //
+ c = m_head;
+
+ while (c)
+ {
+ if (! (c->m_live1 || c->m_live2))
+ {
+ c = c->m_next;
+ continue;
+ }
+ up = c->m_up;
+ dn = c->m_dn;
+ lf = c->m_lf;
+ rt = c->m_rt;
+
+ // up
+ t1 = c->m_live1 & 0x000000ff;
+ if (t1)
+ {
+ if (!up)
+ {
+ up = LinkBox(c->m_x, c->m_y - 8);
+ up->m_dn = c;
+ }
+ t2 = g_tab1[t1];
+ up->m_on[7] += t2;
+ c->m_on[1] += t2;
+ c->m_on[0] += g_tab2[t1];
+ }
+
+ // down
+ t1 = (c->m_live2 & 0xff000000) >> 24;
+ if (t1)
+ {
+ if (!dn)
+ {
+ dn = LinkBox(c->m_x, c->m_y + 8);
+ dn->m_up = c;
+ }
+ t2 = g_tab1[t1];
+ dn->m_on[0] += t2;
+ c->m_on[6] += t2;
+ c->m_on[7] += g_tab2[t1];
+ }
+
+ t1 = c->m_live1;
+ t2 = c->m_live2;
+
+ // left
+ if (t1 & 0x01010101)
+ {
+ if (!lf)
+ {
+ lf = LinkBox(c->m_x - 8, c->m_y);
+ lf->m_rt = c;
+ }
+ if (t1 & 0x00000001)
+ {
+ if (!lf->m_up)
+ {
+ lf->m_up = LinkBox(c->m_x - 8, c->m_y - 8);
+ lf->m_up->m_dn = lf;
+ }
+ lf->m_up->m_on[7] += 0x10000000;
+ lf->m_on[0] += 0x10000000;
+ lf->m_on[1] += 0x10000000;
+ }
+ if (t1 & 0x00000100)
+ {
+ lf->m_on[0] += 0x10000000;
+ lf->m_on[1] += 0x10000000;
+ lf->m_on[2] += 0x10000000;
+ }
+ if (t1 & 0x00010000)
+ {
+ lf->m_on[1] += 0x10000000;
+ lf->m_on[2] += 0x10000000;
+ lf->m_on[3] += 0x10000000;
+ }
+ if (t1 & 0x01000000)
+ {
+ lf->m_on[2] += 0x10000000;
+ lf->m_on[3] += 0x10000000;
+ lf->m_on[4] += 0x10000000;
+ }
+ }
+ if (t2 & 0x01010101)
+ {
+ if (!lf)
+ {
+ lf = LinkBox(c->m_x - 8, c->m_y);
+ lf->m_rt = c;
+ }
+ if (t2 & 0x00000001)
+ {
+ lf->m_on[3] += 0x10000000;
+ lf->m_on[4] += 0x10000000;
+ lf->m_on[5] += 0x10000000;
+ }
+ if (t2 & 0x00000100)
+ {
+ lf->m_on[4] += 0x10000000;
+ lf->m_on[5] += 0x10000000;
+ lf->m_on[6] += 0x10000000;
+ }
+ if (t2 & 0x00010000)
+ {
+ lf->m_on[5] += 0x10000000;
+ lf->m_on[6] += 0x10000000;
+ lf->m_on[7] += 0x10000000;
+ }
+ if (t2 & 0x01000000)
+ {
+ if (!lf->m_dn)
+ {
+ lf->m_dn = LinkBox(c->m_x - 8, c->m_y + 8);
+ lf->m_dn->m_up = lf;
+ }
+ lf->m_on[6] += 0x10000000;
+ lf->m_on[7] += 0x10000000;
+ lf->m_dn->m_on[0] += 0x10000000;
+ }
+ }
+
+ // right
+ if (t1 & 0x80808080)
+ {
+ if (!rt)
+ {
+ rt = LinkBox(c->m_x + 8, c->m_y);
+ rt->m_lf = c;
+ }
+ if (t1 & 0x00000080)
+ {
+ if (!rt->m_up)
+ {
+ rt->m_up = LinkBox(c->m_x + 8, c->m_y - 8);
+ rt->m_up->m_dn = rt;
+ }
+ rt->m_up->m_on[7] += 0x00000001;
+ rt->m_on[0] += 0x00000001;
+ rt->m_on[1] += 0x00000001;
+ }
+ if (t1 & 0x00008000)
+ {
+ rt->m_on[0] += 0x00000001;
+ rt->m_on[1] += 0x00000001;
+ rt->m_on[2] += 0x00000001;
+ }
+ if (t1 & 0x00800000)
+ {
+ rt->m_on[1] += 0x00000001;
+ rt->m_on[2] += 0x00000001;
+ rt->m_on[3] += 0x00000001;
+ }
+ if (t1 & 0x80000000)
+ {
+ rt->m_on[2] += 0x00000001;
+ rt->m_on[3] += 0x00000001;
+ rt->m_on[4] += 0x00000001;
+ }
+ }
+ if (t2 & 0x80808080)
+ {
+ if (!rt)
+ {
+ rt = LinkBox(c->m_x + 8, c->m_y);
+ rt->m_lf = c;
+ }
+ if (t2 & 0x00000080)
+ {
+ rt->m_on[3] += 0x00000001;
+ rt->m_on[4] += 0x00000001;
+ rt->m_on[5] += 0x00000001;
+ }
+ if (t2 & 0x00008000)
+ {
+ rt->m_on[4] += 0x00000001;
+ rt->m_on[5] += 0x00000001;
+ rt->m_on[6] += 0x00000001;
+ }
+ if (t2 & 0x00800000)
+ {
+ rt->m_on[5] += 0x00000001;
+ rt->m_on[6] += 0x00000001;
+ rt->m_on[7] += 0x00000001;
+ }
+ if (t2 & 0x80000000)
+ {
+ if (!rt->m_dn)
+ {
+ rt->m_dn = LinkBox(c->m_x + 8, c->m_y + 8);
+ rt->m_dn->m_up = rt;
+ }
+ rt->m_on[6] += 0x00000001;
+ rt->m_on[7] += 0x00000001;
+ rt->m_dn->m_on[0] += 0x00000001;
+ }
+ }
+
+ // inner cells
+ int i;
+ for (i = 1; i <= 3; i++)
+ {
+ t1 = ((c->m_live1) >> (i * 8)) & 0x000000ff;
+ if (t1)
+ {
+ c->m_on[i - 1] += g_tab1[t1];
+ c->m_on[i ] += g_tab2[t1];
+ c->m_on[i + 1] += g_tab1[t1];
+ }
+ }
+ for (i = 0; i <= 2; i++)
+ {
+ t1 = ((c->m_live2) >> (i * 8)) & 0x000000ff;
+ if (t1)
+ {
+ c->m_on[i + 3] += g_tab1[t1];
+ c->m_on[i + 4] += g_tab2[t1];
+ c->m_on[i + 5] += g_tab1[t1];
+ }
+ }
+
+ c->m_up = up;
+ c->m_dn = dn;
+ c->m_lf = lf;
+ c->m_rt = rt;
+ c = c->m_next;
+ }
+
+ // Stage 2:
+ // Stabilize
+ //
+ c = m_head;
+
+ while (c)
+ {
+ t1 = 0;
+ t2 = 0;
+
+ t3 = c->m_live1;
+ c->m_old1 = t3;
+
+ t4 = c->m_on[0];
+ t1 |= g_tab[ ((t4 & 0x0000ffff) << 4 ) + ((t3 ) & 0xf) ];
+ t1 |= g_tab[ ((t4 & 0xffff0000) >> 12) + ((t3 >> 4 ) & 0xf) ] << 4;
+ t4 = c->m_on[1];
+ t1 |= g_tab[ ((t4 & 0x0000ffff) << 4 ) + ((t3 >> 8 ) & 0xf) ] << 8;
+ t1 |= g_tab[ ((t4 & 0xffff0000) >> 12) + ((t3 >> 12) & 0xf) ] << 12;
+ t4 = c->m_on[2];
+ t1 |= g_tab[ ((t4 & 0x0000ffff) << 4 ) + ((t3 >> 16) & 0xf) ] << 16;
+ t1 |= g_tab[ ((t4 & 0xffff0000) >> 12) + ((t3 >> 20) & 0xf) ] << 20;
+ t4 = c->m_on[3];
+ t1 |= g_tab[ ((t4 & 0x0000ffff) << 4 ) + ((t3 >> 24) & 0xf) ] << 24;
+ t1 |= g_tab[ ((t4 & 0xffff0000) >> 12) + ((t3 >> 28) & 0xf) ] << 28;
+
+ t3 = c->m_live2;
+ c->m_old2 = t3;
+
+ t4 = c->m_on[4];
+ t2 |= g_tab[ ((t4 & 0x0000ffff) << 4 ) + ((t3 ) & 0xf) ];
+ t2 |= g_tab[ ((t4 & 0xffff0000) >> 12) + ((t3 >> 4 ) & 0xf) ] << 4;
+ t4 = c->m_on[5];
+ t2 |= g_tab[ ((t4 & 0x0000ffff) << 4 ) + ((t3 >> 8 ) & 0xf) ] << 8;
+ t2 |= g_tab[ ((t4 & 0xffff0000) >> 12) + ((t3 >> 12) & 0xf) ] << 12;
+ t4 = c->m_on[6];
+ t2 |= g_tab[ ((t4 & 0x0000ffff) << 4 ) + ((t3 >> 16) & 0xf) ] << 16;
+ t2 |= g_tab[ ((t4 & 0xffff0000) >> 12) + ((t3 >> 20) & 0xf) ] << 20;
+ t4 = c->m_on[7];
+ t2 |= g_tab[ ((t4 & 0x0000ffff) << 4 ) + ((t3 >> 24) & 0xf) ] << 24;
+ t2 |= g_tab[ ((t4 & 0xffff0000) >> 12) + ((t3 >> 28) & 0xf) ] << 28;
+
+ c->m_on[0] = c->m_on[1] = c->m_on[2] = c->m_on[3] =
+ c->m_on[4] = c->m_on[5] = c->m_on[6] = c->m_on[7] = 0;
+ c->m_live1 = t1;
+ c->m_live2 = t2;
+
+ // count alive cells
+#if 1
+ wxUint32 t1_, t2_;
+
+ t1_ = (t1 & 0x55555555) + (t1 >> 1 & 0x55555555);
+ t1_ = (t1_ & 0x33333333) + (t1_ >> 2 & 0x33333333);
+
+ t2_ = (t2 & 0x55555555) + (t2 >> 1 & 0x55555555);
+ t2_ = (t2_ & 0x33333333) + (t2_ >> 2 & 0x33333333) + t1_;
+ t2_ = (t2_ & 0x0F0F0F0F) + (t2_ >> 4 & 0x0F0F0F0F);
+ t2_ = (t2_ & 0x00FF00FF) + (t2_ >> 8 & 0x00FF00FF);
+
+ m_numcells += (t2_ & 0xFF) + (t2_ >> 16 & 0xFF);
+#else
+ // Original, slower code
+ for (int i = 0; i < 32; i++)
+ {
+ if (t1 & (1 << i)) m_numcells++;
+ if (t2 & (1 << i)) m_numcells++;
+ }
+#endif
+
+ changed |= ((t1 ^ c->m_old1) || (t2 ^ c->m_old2));
+
+ // mark, and discard if necessary, dead boxes
+ if (t1 || t2)
+ {
+ c->m_dead = 0;
+ c = c->m_next;
+ }
+ else
+ {
+ LifeCellBox *aux = c->m_next;
+ if (c->m_dead++ > MAXDEAD)
+ KillBox(c);
+
+ c = aux;
+ }
+ }
+
+ return changed;
+}
+
+// ==========================================================================
+// LifeModule
+// ==========================================================================
+
+// A module to pregenerate lookup tables without having to do it
+// from the application.
+
+class LifeModule: public wxModule
+{
+DECLARE_DYNAMIC_CLASS(LifeModule)
+
+public:
+ LifeModule() {};
+ bool OnInit();
+ void OnExit();
+};
+
+IMPLEMENT_DYNAMIC_CLASS(LifeModule, wxModule)
+
+bool LifeModule::OnInit()
+{
+ // see below
+ g_tab = new unsigned char [0xfffff];
+
+ if (!g_tab) return false;
+
+ for (wxUint32 i = 0; i < 0xfffff; i++)
+ {
+ wxUint32 val = i >> 4;
+ wxUint32 old = i & 0x0000f;
+ wxUint32 live = 0;
+
+ for (int j = 0; j < 4; j++)
+ {
+ live >>= 1;
+
+ if (((val & 0xf) == 3) || (((val & 0xf) == 2) && (old & 0x1)))
+ live |= 0x8;
+
+ old >>= 1;
+ val >>= 4;
+ }
+
+ g_tab[i] = (unsigned char) live;
}
- // do not count ourselves
- if (IsAlive(x, y)) neighbors--;
+ return true;
+}
- return neighbors;
+void LifeModule::OnExit()
+{
+ delete [] g_tab;
}
+
+// This table converts from number of neighbors (like in on[]) to
+// bits, for a set of four cells. It takes as index a five-digit
+// hexadecimal value (0xNNNNB) where Ns hold number of neighbors
+// for each cell and B holds their previous state.
+//
+unsigned char *g_tab;
+
+// This table converts from bits (like in live1, live2) to number
+// of neighbors for each cell in the upper or lower row.
+//
+int g_tab1[]=
+{
+ 0x00000000,
+ 0x00000011,
+ 0x00000111,
+ 0x00000122,
+ 0x00001110,
+ 0x00001121,
+ 0x00001221,
+ 0x00001232,
+ 0x00011100,
+ 0x00011111,
+ 0x00011211,
+ 0x00011222,
+ 0x00012210,
+ 0x00012221,
+ 0x00012321,
+ 0x00012332,
+ 0x00111000,
+ 0x00111011,
+ 0x00111111,
+ 0x00111122,
+ 0x00112110,
+ 0x00112121,
+ 0x00112221,
+ 0x00112232,
+ 0x00122100,
+ 0x00122111,
+ 0x00122211,
+ 0x00122222,
+ 0x00123210,
+ 0x00123221,
+ 0x00123321,
+ 0x00123332,
+ 0x01110000,
+ 0x01110011,
+ 0x01110111,
+ 0x01110122,
+ 0x01111110,
+ 0x01111121,
+ 0x01111221,
+ 0x01111232,
+ 0x01121100,
+ 0x01121111,
+ 0x01121211,
+ 0x01121222,
+ 0x01122210,
+ 0x01122221,
+ 0x01122321,
+ 0x01122332,
+ 0x01221000,
+ 0x01221011,
+ 0x01221111,
+ 0x01221122,
+ 0x01222110,
+ 0x01222121,
+ 0x01222221,
+ 0x01222232,
+ 0x01232100,
+ 0x01232111,
+ 0x01232211,
+ 0x01232222,
+ 0x01233210,
+ 0x01233221,
+ 0x01233321,
+ 0x01233332,
+ 0x11100000,
+ 0x11100011,
+ 0x11100111,
+ 0x11100122,
+ 0x11101110,
+ 0x11101121,
+ 0x11101221,
+ 0x11101232,
+ 0x11111100,
+ 0x11111111,
+ 0x11111211,
+ 0x11111222,
+ 0x11112210,
+ 0x11112221,
+ 0x11112321,
+ 0x11112332,
+ 0x11211000,
+ 0x11211011,
+ 0x11211111,
+ 0x11211122,
+ 0x11212110,
+ 0x11212121,
+ 0x11212221,
+ 0x11212232,
+ 0x11222100,
+ 0x11222111,
+ 0x11222211,
+ 0x11222222,
+ 0x11223210,
+ 0x11223221,
+ 0x11223321,
+ 0x11223332,
+ 0x12210000,
+ 0x12210011,
+ 0x12210111,
+ 0x12210122,
+ 0x12211110,
+ 0x12211121,
+ 0x12211221,
+ 0x12211232,
+ 0x12221100,
+ 0x12221111,
+ 0x12221211,
+ 0x12221222,
+ 0x12222210,
+ 0x12222221,
+ 0x12222321,
+ 0x12222332,
+ 0x12321000,
+ 0x12321011,
+ 0x12321111,
+ 0x12321122,
+ 0x12322110,
+ 0x12322121,
+ 0x12322221,
+ 0x12322232,
+ 0x12332100,
+ 0x12332111,
+ 0x12332211,
+ 0x12332222,
+ 0x12333210,
+ 0x12333221,
+ 0x12333321,
+ 0x12333332,
+ 0x11000000,
+ 0x11000011,
+ 0x11000111,
+ 0x11000122,
+ 0x11001110,
+ 0x11001121,
+ 0x11001221,
+ 0x11001232,
+ 0x11011100,
+ 0x11011111,
+ 0x11011211,
+ 0x11011222,
+ 0x11012210,
+ 0x11012221,
+ 0x11012321,
+ 0x11012332,
+ 0x11111000,
+ 0x11111011,
+ 0x11111111,
+ 0x11111122,
+ 0x11112110,
+ 0x11112121,
+ 0x11112221,
+ 0x11112232,
+ 0x11122100,
+ 0x11122111,
+ 0x11122211,
+ 0x11122222,
+ 0x11123210,
+ 0x11123221,
+ 0x11123321,
+ 0x11123332,
+ 0x12110000,
+ 0x12110011,
+ 0x12110111,
+ 0x12110122,
+ 0x12111110,
+ 0x12111121,
+ 0x12111221,
+ 0x12111232,
+ 0x12121100,
+ 0x12121111,
+ 0x12121211,
+ 0x12121222,
+ 0x12122210,
+ 0x12122221,
+ 0x12122321,
+ 0x12122332,
+ 0x12221000,
+ 0x12221011,
+ 0x12221111,
+ 0x12221122,
+ 0x12222110,
+ 0x12222121,
+ 0x12222221,
+ 0x12222232,
+ 0x12232100,
+ 0x12232111,
+ 0x12232211,
+ 0x12232222,
+ 0x12233210,
+ 0x12233221,
+ 0x12233321,
+ 0x12233332,
+ 0x22100000,
+ 0x22100011,
+ 0x22100111,
+ 0x22100122,
+ 0x22101110,
+ 0x22101121,
+ 0x22101221,
+ 0x22101232,
+ 0x22111100,
+ 0x22111111,
+ 0x22111211,
+ 0x22111222,
+ 0x22112210,
+ 0x22112221,
+ 0x22112321,
+ 0x22112332,
+ 0x22211000,
+ 0x22211011,
+ 0x22211111,
+ 0x22211122,
+ 0x22212110,
+ 0x22212121,
+ 0x22212221,
+ 0x22212232,
+ 0x22222100,
+ 0x22222111,
+ 0x22222211,
+ 0x22222222,
+ 0x22223210,
+ 0x22223221,
+ 0x22223321,
+ 0x22223332,
+ 0x23210000,
+ 0x23210011,
+ 0x23210111,
+ 0x23210122,
+ 0x23211110,
+ 0x23211121,
+ 0x23211221,
+ 0x23211232,
+ 0x23221100,
+ 0x23221111,
+ 0x23221211,
+ 0x23221222,
+ 0x23222210,
+ 0x23222221,
+ 0x23222321,
+ 0x23222332,
+ 0x23321000,
+ 0x23321011,
+ 0x23321111,
+ 0x23321122,
+ 0x23322110,
+ 0x23322121,
+ 0x23322221,
+ 0x23322232,
+ 0x23332100,
+ 0x23332111,
+ 0x23332211,
+ 0x23332222,
+ 0x23333210,
+ 0x23333221,
+ 0x23333321,
+ 0x23333332
+};
+
+// This table converts from bits (like in live1, live2) to number
+// of neighbors for each cell in the same row (excluding ourselves)
+//
+int g_tab2[]=
+{
+ 0x00000000,
+ 0x00000010,
+ 0x00000101,
+ 0x00000111,
+ 0x00001010,
+ 0x00001020,
+ 0x00001111,
+ 0x00001121,
+ 0x00010100,
+ 0x00010110,
+ 0x00010201,
+ 0x00010211,
+ 0x00011110,
+ 0x00011120,
+ 0x00011211,
+ 0x00011221,
+ 0x00101000,
+ 0x00101010,
+ 0x00101101,
+ 0x00101111,
+ 0x00102010,
+ 0x00102020,
+ 0x00102111,
+ 0x00102121,
+ 0x00111100,
+ 0x00111110,
+ 0x00111201,
+ 0x00111211,
+ 0x00112110,
+ 0x00112120,
+ 0x00112211,
+ 0x00112221,
+ 0x01010000,
+ 0x01010010,
+ 0x01010101,
+ 0x01010111,
+ 0x01011010,
+ 0x01011020,
+ 0x01011111,
+ 0x01011121,
+ 0x01020100,
+ 0x01020110,
+ 0x01020201,
+ 0x01020211,
+ 0x01021110,
+ 0x01021120,
+ 0x01021211,
+ 0x01021221,
+ 0x01111000,
+ 0x01111010,
+ 0x01111101,
+ 0x01111111,
+ 0x01112010,
+ 0x01112020,
+ 0x01112111,
+ 0x01112121,
+ 0x01121100,
+ 0x01121110,
+ 0x01121201,
+ 0x01121211,
+ 0x01122110,
+ 0x01122120,
+ 0x01122211,
+ 0x01122221,
+ 0x10100000,
+ 0x10100010,
+ 0x10100101,
+ 0x10100111,
+ 0x10101010,
+ 0x10101020,
+ 0x10101111,
+ 0x10101121,
+ 0x10110100,
+ 0x10110110,
+ 0x10110201,
+ 0x10110211,
+ 0x10111110,
+ 0x10111120,
+ 0x10111211,
+ 0x10111221,
+ 0x10201000,
+ 0x10201010,
+ 0x10201101,
+ 0x10201111,
+ 0x10202010,
+ 0x10202020,
+ 0x10202111,
+ 0x10202121,
+ 0x10211100,
+ 0x10211110,
+ 0x10211201,
+ 0x10211211,
+ 0x10212110,
+ 0x10212120,
+ 0x10212211,
+ 0x10212221,
+ 0x11110000,
+ 0x11110010,
+ 0x11110101,
+ 0x11110111,
+ 0x11111010,
+ 0x11111020,
+ 0x11111111,
+ 0x11111121,
+ 0x11120100,
+ 0x11120110,
+ 0x11120201,
+ 0x11120211,
+ 0x11121110,
+ 0x11121120,
+ 0x11121211,
+ 0x11121221,
+ 0x11211000,
+ 0x11211010,
+ 0x11211101,
+ 0x11211111,
+ 0x11212010,
+ 0x11212020,
+ 0x11212111,
+ 0x11212121,
+ 0x11221100,
+ 0x11221110,
+ 0x11221201,
+ 0x11221211,
+ 0x11222110,
+ 0x11222120,
+ 0x11222211,
+ 0x11222221,
+ 0x01000000,
+ 0x01000010,
+ 0x01000101,
+ 0x01000111,
+ 0x01001010,
+ 0x01001020,
+ 0x01001111,
+ 0x01001121,
+ 0x01010100,
+ 0x01010110,
+ 0x01010201,
+ 0x01010211,
+ 0x01011110,
+ 0x01011120,
+ 0x01011211,
+ 0x01011221,
+ 0x01101000,
+ 0x01101010,
+ 0x01101101,
+ 0x01101111,
+ 0x01102010,
+ 0x01102020,
+ 0x01102111,
+ 0x01102121,
+ 0x01111100,
+ 0x01111110,
+ 0x01111201,
+ 0x01111211,
+ 0x01112110,
+ 0x01112120,
+ 0x01112211,
+ 0x01112221,
+ 0x02010000,
+ 0x02010010,
+ 0x02010101,
+ 0x02010111,
+ 0x02011010,
+ 0x02011020,
+ 0x02011111,
+ 0x02011121,
+ 0x02020100,
+ 0x02020110,
+ 0x02020201,
+ 0x02020211,
+ 0x02021110,
+ 0x02021120,
+ 0x02021211,
+ 0x02021221,
+ 0x02111000,
+ 0x02111010,
+ 0x02111101,
+ 0x02111111,
+ 0x02112010,
+ 0x02112020,
+ 0x02112111,
+ 0x02112121,
+ 0x02121100,
+ 0x02121110,
+ 0x02121201,
+ 0x02121211,
+ 0x02122110,
+ 0x02122120,
+ 0x02122211,
+ 0x02122221,
+ 0x11100000,
+ 0x11100010,
+ 0x11100101,
+ 0x11100111,
+ 0x11101010,
+ 0x11101020,
+ 0x11101111,
+ 0x11101121,
+ 0x11110100,
+ 0x11110110,
+ 0x11110201,
+ 0x11110211,
+ 0x11111110,
+ 0x11111120,
+ 0x11111211,
+ 0x11111221,
+ 0x11201000,
+ 0x11201010,
+ 0x11201101,
+ 0x11201111,
+ 0x11202010,
+ 0x11202020,
+ 0x11202111,
+ 0x11202121,
+ 0x11211100,
+ 0x11211110,
+ 0x11211201,
+ 0x11211211,
+ 0x11212110,
+ 0x11212120,
+ 0x11212211,
+ 0x11212221,
+ 0x12110000,
+ 0x12110010,
+ 0x12110101,
+ 0x12110111,
+ 0x12111010,
+ 0x12111020,
+ 0x12111111,
+ 0x12111121,
+ 0x12120100,
+ 0x12120110,
+ 0x12120201,
+ 0x12120211,
+ 0x12121110,
+ 0x12121120,
+ 0x12121211,
+ 0x12121221,
+ 0x12211000,
+ 0x12211010,
+ 0x12211101,
+ 0x12211111,
+ 0x12212010,
+ 0x12212020,
+ 0x12212111,
+ 0x12212121,
+ 0x12221100,
+ 0x12221110,
+ 0x12221201,
+ 0x12221211,
+ 0x12222110,
+ 0x12222120,
+ 0x12222211,
+ 0x12222221
+};
projects / wxWidgets.git / blobdiff